Padrões e classes:
GB5310, GB3087, 10#, 20#, 20G, 20MnG, 12Cr1MoVG, 15CrMoG,
ASTM A335/DIN17175 (19Mn5/13CrMo44/14MoV63/14MoV63/10CrMo910)
) P265GH, 16Mo3/JIS G3458 de EN10216 ((STPA 12/20/22/23/24/25/26 de)/
JIS G3462 (STBA12/13/20/de 22/23)
JIS G3467 (STF 410/STFA 12/22/23/24/25/de 26)
Especificação:
O.D.20-480mm, W.T. 2 - 60mm.
China